.page-contact {
  --pc-r: 18px;
  --pc-line: var(--navy-line);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: 22px 0 6px;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--track-orange);
}

.page-contact h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(30px, 7vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper-white);
}

.page-contact .contact-hero__lede {
  max-width: 38em;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 250, 255, 0.86);
}

.page-contact .media-frame {
  position: relative;
  margin: 0;
  border: 1px solid var(--pc-line);
  border-radius: var(--pc-r);
  overflow: hidden;
  background: var(--panel-navy);
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 12, 22, 0) 58%, rgba(7, 12, 22, 0.6) 100%);
  pointer-events: none;
}

.page-contact .contact-hero__channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--pc-line);
  border-radius: var(--pc-r);
  overflow: hidden;
  background: var(--pc-line);
}

.page-contact .channel-strip__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 18px 20px;
  background: linear-gradient(180deg, rgba(15, 26, 43, 0.96), rgba(7, 12, 22, 0.96));
}

.page-contact .channel-strip__item--cyan {
  background: linear-gradient(180deg, rgba(52, 245, 197, 0.11), rgba(7, 12, 22, 0.96));
}

.page-contact .channel-strip__item--orange {
  background: linear-gradient(180deg, rgba(255, 107, 44, 0.12), rgba(7, 12, 22, 0.96));
}

.page-contact .channel-strip__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate-mute);
}

.page-contact .channel-strip__value {
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.6vw, 22px);
  line-height: 1.35;
  color: var(--pulse-cyan);
  overflow-wrap: anywhere;
}

.page-contact .channel-strip__item--orange .channel-strip__value {
  color: var(--track-orange);
}

.page-contact .channel-strip__value--sm {
  font-size: clamp(15px, 3.2vw, 18px);
  color: var(--paper-white);
}

/* ---------- 通用节奏 ---------- */
.page-contact .section {
  padding: 38px 0;
}

.page-contact .section__title {
  margin: 8px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.6vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--paper-white);
}

.page-contact .lede {
  max-width: 46em;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(247, 250, 255, 0.84);
}

/* ---------- 回复节奏 ---------- */
.page-contact .contact-rhythm__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-contact .contact-rhythm__text p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 250, 255, 0.86);
}

.page-contact .window-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.page-contact .window-strip__item {
  padding: 7px 13px;
  border: 1px solid var(--pc-line);
  border-radius: 999px;
  background: var(--panel-navy);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper-white);
  font-variant-numeric: tabular-nums;
}

.page-contact .window-strip__item--extra {
  border-color: rgba(255, 194, 75, 0.55);
  color: var(--signal-amber);
  background: rgba(255, 194, 75, 0.07);
  font-family: var(--font-body);
  font-size: 12px;
}

/* ---------- 分段切换 ---------- */
.page-contact .tabs {
  margin-top: 24px;
}

.page-contact .tabs__list {
  position: relative;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 12px;
  scrollbar-width: none;
}

.page-contact .tabs__list::-webkit-scrollbar {
  display: none;
}

.page-contact .tabs__tab {
  flex: 0 0 auto;
  appearance: none;
  padding: 11px 17px;
  border: 1px solid var(--pc-line);
  border-radius: 999px;
  background: var(--panel-navy);
  color: var(--paper-white);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-contact .tabs__tab:hover {
  border-color: var(--slate-mute);
}

.page-contact .tabs__tab[aria-selected="true"] {
  color: var(--pulse-cyan);
  border-color: rgba(52, 245, 197, 0.6);
  background: rgba(52, 245, 197, 0.09);
}

.page-contact .tabs__tab:focus-visible {
  outline: 2px solid var(--pulse-cyan);
  outline-offset: 2px;
}

.page-contact .tabs__indicator {
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--pulse-cyan), var(--track-orange));
  transition: transform 0.2s ease, width 0.2s ease;
  pointer-events: none;
}

.page-contact .tabs__panel {
  padding: 22px 20px 24px;
  border: 1px solid var(--pc-line);
  border-radius: var(--pc-r);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(52, 245, 197, 0.1), transparent 58%),
    var(--panel-navy);
}

.page-contact .tabs__panel[hidden] {
  display: none;
}

.page-contact .tabs__panel:focus-visible {
  outline: 2px solid var(--pulse-cyan);
  outline-offset: 3px;
}

.page-contact .tabs__panel-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.8vw, 27px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper-white);
}

.page-contact .tabs__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 250, 255, 0.86);
}

.page-contact .prep-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .prep-list li {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-white);
}

.page-contact .prep-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--pulse-cyan);
  border-radius: 3px;
  background: rgba(52, 245, 197, 0.18);
}

.page-contact .prep-note {
  margin: 18px 0 0;
  padding: 12px 15px;
  border-left: 2px solid var(--signal-amber);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  background: rgba(255, 194, 75, 0.07);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 250, 255, 0.88);
}

/* ---------- 三步准备 ---------- */
.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .flow__step {
  position: relative;
  padding: 20px 18px;
  border: 1px solid var(--pc-line);
  border-radius: var(--r-m);
  background: linear-gradient(180deg, rgba(15, 26, 43, 0.94), rgba(7, 12, 22, 0.94));
}

.page-contact .flow__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal-amber);
}

.page-contact .flow__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper-white);
}

.page-contact .flow__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(247, 250, 255, 0.84);
}

/* ---------- 备案与站务 ---------- */
.page-contact .record-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 22px;
}

.page-contact .paper-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 20px 20px 22px;
  border-radius: var(--r-m);
  background: var(--cream);
  color: var(--brown-ink);
}

.page-contact .paper-card:nth-child(2) {
  background: var(--cream-dim);
  border-radius: 22px 14px 20px 16px;
}

.page-contact .paper-card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(36, 25, 14, 0.62);
}

.page-contact .paper-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.4vw, 21px);
  line-height: 1.35;
  color: var(--brown-ink);
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.page-contact .paper-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(36, 25, 14, 0.78);
}

/* ---------- 延伸入口 ---------- */
.page-contact .more-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-hero__channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .record-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .more-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -14px;
    top: 46px;
    width: 8px;
    height: 8px;
    border-top: 2px solid var(--track-orange);
    border-right: 2px solid var(--track-orange);
    transform: rotate(45deg);
  }
}

@media (min-width: 900px) {
  .page-contact .section {
    padding: 56px 0;
  }

  .page-contact .contact-hero {
    padding-top: 28px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
    column-gap: 44px;
    row-gap: 30px;
  }

  .page-contact .contact-hero__channels {
    grid-column: 1 / -1;
  }

  .page-contact .contact-rhythm__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    align-items: center;
    gap: 44px;
  }

  .page-contact .tabs__panel {
    padding: 28px 30px 30px;
  }
}

@media (min-width: 1040px) {
  .page-contact .record-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .more-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .tabs__tab,
  .page-contact .tabs__indicator {
    transition: none;
  }
}